Smithsonian Telephone Numbers Change
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PrintSmithsonian telephone numbers change from the "381" exchange (on the Mall) to "357" as the result of the replacement of the old electromechanical phone system, installed in 1961, with the Bell System's Centrex 11. It is believed that the prefix for numbers at the National Zoological Park and Barney House will change to "745,"and numbers at the National Museum of African Art, Anacostia Museum, and L'Enfant Plaza to "479." This was, in fact, a C&P Telephone Company error. The correct prefixes proved to be "673 "for the Zoo and Barney House, and "287" for Anacostia and L'Enfant Plaza. All the other buildings, on the Mall, the Renwick, National Portrait Gallery, National Collection of Fine Arts and the North Capitol Street facility changed to "357."
Chronology of Smithsonian History
Institutional History Division, Smithsonian Institution Archives, 600 Maryland Avenue, S.W., Washington, D.C. 20024-2520, SIHistory@si.edu
June 2, 1980